The up-spec LTZ range in both models receives the most attention; now equipped with heated leather seats and a new ‘soft touch’ interior.

Across the board, the Colorado gets a new acoustic package for 2015 which Holden says will improve noise, vibration and harshness (NVH) levels.

A new ‘comfort suspension’ for Colorado LTZ pickup models is perhaps aimed at buyers who aren’t planning frequent trips off the bitumen, bringing revised spring-rate and damper settings along with a new, stiffer front stabiliser bar.

In adapting the suspension, Holden is responding to feedback from customers expressing more interest in setting up their utility as an on-road daily-driver.

Holden says the new suspension provides a more balanced and smoother ride, with a focus on improving the Colorado’s behaviour on urban roads.

Tow ratings are unaffected by the updates (3.0 tonnes in Colorado 7, 3.5 tonnes in Colorado), but the LTZ’s suspension changes now make it the only Colorado variant with a payload of less than one tonne.

Inside, LTZ variants in both models now offer a more premium feel with new Jet and Piano Black soft-touch surfaces and heated leather seats (optional on LTZ Crew Cab).

Holden utilised Monash University’s wind tunnel when developing its new acoustic NHV package - fitted to all 2015 models and again focusing on an improved urban ride.

Door seals and roof manufacturing tolerances have both been improved, and some lower-spec models gain new carpets.

Further updates include revised settings on hill-decent control and hill-start assist, along with a new Satin Steel Grey paint finish.

Power still comes from a 2.8 litre turbo-diesel four-cylinder engine producing 147kW, with 500Nm of torque in six-speed automatic models and 440Nm with the six-speed manual.

Fuel consumption is listed between 7.9 and 9.1 l/100km in the Colorado (depending on the model) and 9.2 l/100km in the automatic-only Colorado 7.

Holden worked alongside engineers from Brazil when updating the Colorado, and while Thai-built models (supplying Australia) will immediately reap the benefits, some changes may by adopted in Colorado derivatives worldwide.

While the ‘comfort pack’ is standard on the 2015 LTZ pickup only, Holden hasn’t ruled out offering the new pack as an option on other Colorado models in the future.

Fans will be pleased to learn that the update does not attract a price-rise, with 2014 prices retained for the new model.

Holden Director of Marketing, Bill Mott, said the updates would improve the urban driving experience, and that the 2015 Colorado range would appeal to more buyers.

“The Colorado range has a great reputation for off-road driving and we wanted to translate this to urban and highway driving too,” Mr Mott said.

“Whilst customers enjoy the reassurance they get from driving a very capable 4x4, they should also enjoy driving it on everyday errands.”

Mr Mott said Colorado customers would continue to benefit from Holden’s capped-price servicing plan, with service fees for both models set at $295 each for the first three years or four scheduled services (60,000km, whichever occurs first).